Improved hydrophilicity of zinc oxide-incorporated layer-by-layer polyelectrolyte film fabricated by dip coating method

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• 作者：T. Charinpanitkul^a ; ^{ctawat@chula.ac.th} ; W. Suthabanditpong^a ; ^b ; H. Watanabe^b ; T. Shirai^b ; K. Faungnawakij^c ; N. Viriya-empikul^c ; M. Fuji^b
• 关键词：ZnO ; Polyelectrolyte ; Layer-by-layer ; Hydrophilicity ; Water contact angle
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：2012
• 期刊代码：P29_1226086x
• 类别：ce
• 出版时间：25 July, 2012
• 卷：18
• 期：4
• 页码：1441-1445
• 文件大小：730 K

摘要

ZnO nanoparticles suspended in poly(acrylic acid) (PAA) were deposited onto layer-by-layer (LBL) polyelectrolyte (PET) films fabricated from poly(allylamine hydrochloride) (PAH) and PAA by dip coating method. Effect of etching time and concentration of ZnO suspension on hydrophilicity of the LBL-PET films before and after UV irradiation was examined using water contact angle measurement. 2.0 M PAH/PAA solutions with a dipping speed of 3.0 cm/min provided stable LBL-PET films with thickness sufficient for HCl etching. Glass substrates with the etched LBL-PET film dipped into 0.2 wt.%ZnO suspension exhibited the contact angle of 10掳 after irradiated by UV for 60 min.